Block Chain Based Secure with Improvised Bloom Filter over a Decentralized Access Control Network on a Cloud Platform

The control of access to data is perhaps the primary factor in enhancing secure data within this cloud-based storage system. But, traditional data sharing, along with access control techniques, have been a significant problem in the field of research that includes leakage of privacy information and key misuse. Transferring Electronic Records (ER) on the cloud has allowed data sharing among various health applications. Therefore, two major contributions are created in this study to provide effective access control and private data sharing as well as retrieval within the cloud based on blockchain. In the initial contribution is blockchain-based access control and sharing method effectively resolves the single point of failure within the cloud infrastructure. The Data User (DU) generates an application for registration based on the ID and password and is then forwarded to the Data Owner (DO). The DO data is incorporated into a transactional Blockchain based by encrypted master keys. The DO secures data while the encrypted file is uploaded into the Interplanetary File System (IPFS). In the second piece of work blockchain structure was created to facilitate information sharing as well as retrieval within cloud platforms.